Added downloading from spotify.

TODO: Two playing options - old stream and new download

modules/spotify/spotify_dl.py

@@ -0,0 +1,57 @@
+import requests
+from urllib.parse import urlencode
+from urllib.request import urlopen
+from urllib.error import HTTPError
+import re
+from base64 import b64encode
+from modules.spotify.config import SpotifyConfig
+
+
+def reencode(text: str):
+    return b64encode(text.encode()).decode()
+
+
+class Spotify(object):
+    def __init__(self):
+        try:
+            headers = {
+                'Authorization': f'Basic '
+                                 f'{reencode(f"{SpotifyConfig.get().client_id}:{SpotifyConfig.get().client_secret}")}',
+            }
+
+            data = {
+                'grant_type': 'client_credentials'
+            }
+
+            r = requests.post('https://accounts.spotify.com/api/token', headers=headers, data=data)
+
+            self.token = r.json()['access_token']
+        except Exception as e:
+            print(e)
+
+    def get_youtube_url(self, url) -> str | None:
+        track_id = url.split('/')[-1].split('?')[0]
+        r = requests.get(f"https://api.spotify.com/v1/tracks/{track_id}",
+                         headers={'Authorization': f'Bearer {self.token}'})
+
+        if r.status_code == 400 or r.status_code == 401:
+            return None
+
+        track = r.json()
+
+        song_name = track['name']
+        artists = []
+
+        for artist in track['artists']:
+            artists.append(artist['name'])
+        artist_name = ' '.join(artists)
+
+        try:
+            query_string = urlencode({'search_query': artist_name + ' ' + song_name})
+            htm_content = urlopen('http://www.youtube.com/results?' + query_string)
+            search_results = re.findall(r'/watch\?v=(.{11})', htm_content.read().decode())
+
+            return f'http://www.youtube.com/watch?v={search_results[0]}'
+
+        except HTTPError:
+            return None